Impression materials and electrodeposits. Part II: Electrodeposits

Area of Science:

• Materials Science
• Biomaterials Engineering
• Electrochemistry

Background:

• Die inaccuracies in dental prosthetics can arise from various factors.
• Understanding the interplay between substrate materials and electrodeposits is crucial for improving accuracy.

Purpose of the Study:

• To evaluate the success of different substrate/electrodeposit combinations for creating accurate dental dies.
• To identify factors contributing to successful or unsuccessful electrodeposit formation.

Main Methods:

• Tested thirteen substrate/electrodeposit combinations.
• Assessed completed electrodeposits for pitting, discoloration, stress, and dimensional accuracy.
• Compared electrodeposit dimensions to the master die.

Main Results:

• Six combinations were successful; seven failed due to defects or high stress.
• President/copper showed the largest dimensional difference.
• Polyjel/nickel and Elasticon/nickel demonstrated minimal change from the master die.
• Nickel electrodeposits showed no significant difference from the master die.

Conclusions:

• Both impression material and electrodeposit influence die inaccuracy.
• Factors like substrate temperature and material properties affect electrodeposit dimensions.
• Findings challenge the notion that only impression material causes die inaccuracy.